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Tips, Techniques, and Questions -- Technical questions or tips |
2017-08-11, 3:52am
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Member
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Join Date: Jul 25, 2017
Location: Melbourne, Australia
Posts: 42
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Avoiding the starting glob of glass...
A very newbie question...
What is the main cause when winding glass onto a mandrel of a big glob to start with? Mandrel too cold, glass too hot?
At the moment, sometimes it happens, sometimes it does not, and I'm too new to have any experience to understand what causes it. However, it does stop me from making a nice even disc as the glob of a gather means the glass runs out too soon.
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2017-08-11, 5:42am
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Senior Member
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Join Date: Feb 02, 2010
Posts: 3,382
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A very light touch in joining glass and mandrel will give you a smaller footprint to start with. Also, have the mandrel turning before you even get the glass near the surface of the release. If you want a smaller footprint, don't melt a huge gob of glass to start. Melt a small blob the size of a pea, get it down for your footprint, then melt a bigger blob to increase size of bead. HTH
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ESC
Soft glass on a Minor/concentrator since 1996
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2017-08-11, 8:30am
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Jer. 29:11, Prov.10:19
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Join Date: Jun 29, 2005
Posts: 487
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Also, if you do wind up with too large a gather, simply swipe some off on the very end of the mandrel---much easier than picking up a tool to remove it. As you pull away, you'll thin the gather, making it easier to start with a small footprint.
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2017-08-11, 12:59pm
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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I've also noticed if you start spinning the mandrel before the glass touches it you get less of a starting glob.
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2017-08-11, 4:48pm
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Member
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Join Date: Jul 25, 2017
Location: Melbourne, Australia
Posts: 42
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Thanks folks. I'm having to visit inlaws today but I'll try this all tomorrow!
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2017-08-11, 5:01pm
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Loving learning
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Join Date: Oct 11, 2010
Location: Florida
Posts: 11,654
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Sometimes I use my marver to roll it into a pointed blob if I have not paid attention and have to much melted too.
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2017-08-11, 10:07pm
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Marble Lover
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Join Date: Apr 16, 2012
Location: Broken Arrow, OK
Posts: 802
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I saw someone on YouTube rotating the mandrel towards them and they laid the starting blob of glass on the top of the mandrel. As it rotated, they pushed the rest of the melting rod through that first blob for the first full rotation and it made perfect donuts.
I just looked and can't find the video, unfortunately.
-BEP
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Brian E. Parker aka BEPNewt
Lifelong glass lover, now getting to work with it. Using a Bravo on an M20 & Natural Gas ( inner ), Tanked O2 & Propane ( outer ).
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2017-08-12, 6:03am
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Peerless Thread Killer
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Join Date: Jul 20, 2007
Location: Mt. Chokula
Posts: 1,148
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If you are able to watch youtube videos on beginner bead making, it might give you a better idea on how to do it. There are lots of them and many are wonderfully informative.
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2017-08-12, 10:54am
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Phill
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Join Date: Mar 21, 2009
Location: Winnebago, MN
Posts: 2,489
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When I started I made really skinny disk beads adding thin layer on top of thin layer and then slowly melted them out to the size of foot print I wanted.
It helped me get a handle on heat control with the different stiffness of various colors and transparent versus opaque glass.
It also helped me learn to only melt a little gather of glass instead of the huge globs from my first attempts.
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